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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is transformer

Hofincons,

7 8519

in transformers for ex. 100mva and 400kv the secondary current is about 420 amps but for selection of bushing the capacity of selected bushing is 2000A why there is such big difference ?

ABB,

2 5097

why potetial transformer primary ground?

1 3893

what is creepage distance in sub-station?

ABB,

3 9613

what is vibration?

2 4166

how can we make cable shedule for controll wiring ? which details must be required for it.?

L&T,

2192

How can we decide the fualt levels of sub-stations?

Bhel, Enercon, Prakash Industries,

2 7813

what difference between tapping -15% to +5 % and -5% to +15% tap. & how can define HV turns on maximun & minimum tap of power transformer.

2 5170

what is the difference between "Rotary bypass isolation switch and Normal bypass switch" pls share indepth techs?

2117

ohms law is applicable for dc or ac current or for both??? explain it berifly??

3 6117

what will happen if we directly give supply to rotor of a induction motor?

1 4093

Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.

TATA,

3412

nwhat are the main Components of servo motor?

BARC,

2146

What are the classification of Servo Motor?

BARC,

4 10849

What are the function of different components of servo motor?

BARC, Parle,

2095


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

what is meant by skew width in machines?

2279


Explain what is electric traction?

1197


No load tap changing transformer working

1719


what is a power factor?

1886


In EB metering we face problem kva jump even in no load condition.can any one help to control this

1895


Wind mill

1960


how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....

2112


when ID fan will immediately stop through VFD what exactly cause and problem the ID fan

1531


can anyone give an idea about dia calculation in cold rolling mill

1741


if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.

2033


What happens to a line-frequency of high-frequency transformer when it is first energized/ re-energize?

2231


how we can calculate the efficiency of a diesel generator ?

1779


how indusrial diesel generator work

1963


Why 1/3 is used in symmetrical components?

1910


hello everybody. what does an abnormal stator winding impedance or dc resistance show? thanx

1977